Hey there, Michael Church with CrawlSpaceNinja.
We got a question about is installing an attic ventilation fan going to pull conditionedair out of the living space, is that a good idea?Well stay tuned and at the very end of the video we're going to be giving away a freeguide about the top three asthma triggering allergens that are in your home and what youcan do about them, so make sure you stayed tuned to the end of the video.
Okay so here's the thing, a few weeks ago we did a video about four places to air sealin your attic.
If you get a chance make sure you watch that, I'm gonna put a link to that below.
What happens is is if you try to ventilate the attic and you're pulling more air outthan the living space is producing then yes you can be pulling your conditioned air fromyour living space into the attic and then blowing out of the roof obviously.
But you're probably doing that already if you're not properly air sealed because ifyou've got warm air, what does warm air want to do?It wants to rise out of the roof, it's called the stack effect.
In that case if you're ventilating the attic whenever it's cold outside you're alreadypulling all that conditioned air out if your attic's not air sealed properly anyway.
Now the caveat is in the summertime, which is what I think the questions was more about,is if you're ventilating in the summertime is that going to pull conditioned air outof the living space.
Yes it can because in the summer the air flow typically reverses because cold air falls,it draw hot air out of the attic into your living space which is what makes that roomdirectly below the attic hotter whether it's the main floor or the second floor, whateverroom is directly below the attic in the summertime is going to be hotter because the cool airof the AC is drawing that heated air of the attic into the living space if the attic isnot properly air sealed.
Before I answer the ventilation question I'm gonna refer you back to make sure you do thosefour air seals that we talked about that are critical.
Make sure you do that first, then if you're still having issues with a hot bonus roomor a hot floor below the attic then look at getting a ventilation like a solar attic fanwhich you can get on our DIY page or something like that.
The point is is that you want to air seal first, always air seal first then ventilatebecause if you ventilate then you air seal you could be sucking conditioned air out ofthe house.
Anyway, my name's Michael Church with CrawlSpaceNinja.
We're also gonna put a link below to a guide that talks about three asthma triggers thatjust about every house has and what to do about them.
If you know somebody with asthma or allergies or things like that make sure you check outthat free guide below.
My name's Michael Church with CrawlSpaceNinja.
com we just want to thank you for watching, Ihope you make it a happy and blessed day, see you later.